Hand-threading shuttle.



N. DEMERS.

HAND THREADING SHUTTLE.

APPLIOATION FILED APE.12,1913.

Patented July 21, 1914-.

Lm mm 2 SHEETS-SHEET 1.

INVENTOR WITNESSES wAsymumN, 11c.

N. DEMERS.

HAND THREADING SHUTTLE.

Patented July 21, 19M.

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' l/VVENTOR nisrrnn STATES PATENT FFTCE;

HAND-THBEADING SHUTTLE.

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Specification of Letters Patent.

Patented July 21, 1914.

Application filed April 12, 1913. Serial No. 760,763.

To all whom it may concern Be it known that I, NAZAIRE DEMERS, c1t1- zenof the United States, residing at Manchester, in the county of Hillsboroand State of New Hampshire, have invented new and useful Improvements inHand-Threading Shuttles, of which the following is a specification.

My invention pertains to shuttles and more particularly hand threadingshuttles.

The object of the invention is to provide a hand-threading shuttle thatis well-bah anced and light in weight and one calculated to be quicklyand inexpensively produced and which embodies no part-s liable to wearout after a short period of use or parts likely to interfere in anymeasure with the operation of a loom.

The invention also seeks to avoid undue weakening of the shuttle bodyand to preclude casual unthreading of the shuttle.

To the attainment of the foregoing and other objects hereinafter setforth the in vention consists in the peculiar construction, novelcombination of parts as hereinafter described and definitely claimed.

Tn the drawings, accompanying and forming part of this specification:Figure 1 is a plan of so much of a shuttle as is necessary to illustratethe preferred embodiment of my invention. Fig. 2 is a front sideelevation of the same. Fig. 3 is an inverted plan view. Fig. 4 is atransverse section taken in the plane indicated by the line 44 of Fig.2. F 5 is a sect-ion taken on the line 55 of Fig. 1. Fig. 6 is a sectiontaken on the line 66 of Fig. Q'with some parts in elevation. Fig. 7 is across-section on line 7-7 of Fig. 1. Fig. 8 is a cross-section on theline 8-8 of Fig. 2. Fig. 9 is a perspective of my novel friction spring.Fig. 10 is a perspective of the novel eye.

Similar numerals of reference designate corresponding parts in all ofthe views of the drawings.

The shuttle body 1 is provided with the usual chamber 2 to receive abobbin 3 and is otherwise of the ordinary well-known generalconstruction.

In furtherance of my invention the shuttle body is provided in its upperside with a longitudinal channel 4 that extends about the proportionaldistance illustrated from the chamber 2 toward the tip of the body andis of the depth shown in Figs. 4 and 8.

Arranged in a transverse aperture 5 that j'intersects the inner portionof the channel 4 is a pin 6. This pin rests in the portion of theaperture between the channel 4 and the front side of the shuttle body,and has a sharp point disposed in the channel as ,shown. Consequentlythe pin is enabled to lock the thread in the channel 4. The said pin 6is not essential to the successful practice of my invention though it ispreferably employed. Manifestly it can be adjusted as occasion demandsthrough the medium of a thin nail or piece of wire introduced fromeither end of the aperture 5 as is necessary. When deemed expedient ascrew 7 is embedded in the shuttle body 1 at a point adjacent theaperture 5 in order to lend increased strength to the body. Extendingcrosswise of the shuttle body is a bore 8 and in the said bore is fixedthe eye 9 com prised in my invention and hereinafter specificallydescribed.

Communicating with the forward end of the channel 4 and extendingforwardly and diagonally outward therefrom to the forward side of theshuttle body is a slit 10, and formed in the forward side of the shuttlebody and leading backwardly from the slit 10 to the eye 9 is ahorizontal slit. Extending upwardly from the underside of the shuttlebody and intersecting the forward portion of the channel 4 is a verticalbore 12, Figs. 3, 5 and 7, and in the said bore 12 is positioned thefriction spring 13 which con stitutes an important feature of myinvention.

As will be observed by reference to Fig. 6, the eye 9, which ispreferably of metal, is arranged immediately in advance of the frictionspring 18, and by comparison of Figs. 6 and 10, it will be noted thatthe eye has a notch 14 in alinement with the channel 4 and also has aslot 15 that extends outwardly from the notch. Said slot 15 merges atits outer end into a V-shaped slot 16, and the outer portion of thislatter extends to the end of the eye 9 at the front side of the shuttlebody and is there open.

As will be observed by comparison of Figs. 7 and 9 my novel frictionspring comprises a loop 17 having its bight flared outwardly, and a loop18 that extends upwardly from one end of the loop 17 and has its bightdisposed at a right angle to that of the loop 17. i

disposed at the upper end of the bore 12, and

that the bight of the loop 18 is arranged at a right angle to the lengthof the channel 4. It will further be noted by reference to Fig. 7 thatthe terminal of the loop 18 is arranged adjacent the rear side of theshuttle body 1. Both terminals of the friction spring are indicated by19 and bear at their lower ends against the side wall of the bore 12,and by virtue of this and the resiliency of the spring it will bemanifest that there is no liability of the spring being casuallydisplaced during the use of the shuttle. Then, however, it is desiredfor any reason to remove the spring, the same can be readilyaccomplished by introducing a suitable instrument and displacing theterminals of the spring from their complementary bearings. The eye 9 isarranged in the transverse bore 8 and is held in position and againstcasual displacement by frictional contact, and this with the tubular endportion of the eye (see the right-hand end of Fig. 10) adjacent the rearside of the shuttle body. In the event of the eye working loose it canbe removed from the bore and a wood plug 30 forced into the tubularportion of the eye (Fig. 10) to expand the eye, and then the eye can beforced back into the shuttle body, or, if preferred, the wood plug 30can be forced into the tubular portion of the eye while the eye remainsin the shuttle body. At this point I would have it understood that it isnecessary to remove the friction spring 13 as a condition precedent tothe removal of the e e 9.

. In threading the shuttle, the thread is pulled inthe curved slit 10and slips downwardly in the mouth of the friction spring 0., between thebights of the two loops thereof. This curves the thread and at the sametime the thread slips down by the point of the pin 6 and deep under thesaid point. During the pulling of the thread in the slit 11 toward theeye 9, the thread slips in around the point or apex of the slit 16 inthe eye and drops under the point at the end-of the said slit 16. Withthis done it is impossible to unthread the shuttle. It will also benoticed in this connection that in delivering the thread balloons aroundthe end of the bobbin and plays up and down in the entrance channel 1-and under the pin 6. It will also be noticed that considerable playspace for the thread is affordedv under the pin 6, and by reference toFig. 6 it will be seen that a portion of thefriction spring 13 is in thesame vertical plane as the notch 14 in the eye 9, and the thread turnssharply around the said spring portion and enters the notch of the eyeto the best advantage. When the filling is ofsuch character thatfriction or tension is not necessary, the friction spring 13 can beremoved whereupon the thread will turn around the lip at the left-handside of the notch 14: in the eye 9.

It will be gathered from the foregoing that my improvements arecalculated to prevent accumulation of lint or waste in the throat of theshuttle.

lVhile my novel shuttle is a hand-threading shuttle, I would have itunderstood that the eye 9 and the friction spring 13 are susceptible ofbeing used to advantage in a self-threading shuttle.

1n the use of the shuttle, the thread has considerable space to play at35, Fig. 5, under the pin 6, and the friction spring branch holds thetension of the thread to prevent the thread from kinking or slackeningthe instant that the shuttle dwells, and further that the shape of theslot in the eye at 16 allows the thread to play.

Having described my invention, what I claim and desire to secureby'Letters-Patent, is:

1. The combination of a shuttle body having a chamber and a channelextending 1ongitudinally from said chamber toward its tip and alsohaving a transverse aperture that intersects the inner portion of saidchannel and extends between opposite sides of the body, and furtherhaving a vertical bore that extends between its lower side and saidchannel, a bore extending between the forward and rear sides of thebody, a slit extending forwardly and diagonally outward from saidchannel to the forward side of the body, and a slit in said forwardside-and leading backwardly from the first-named slit to thesecond-named bore; a pin disposed and adjustable endw-ise in the saidtransverse aperture and having its inner end arranged in the saidchannel; a tension device arranged in said vertical bore of the body andhaving a mouth disposed in alinement with the channel; and an eyearranged in thesecond-named bore of the body and communicating with thelast-named slit of the body and also communicating with the channel andthe tension device;

2. The combination of a shuttle body having a chamber and a longitudinalchannel extending from the chamber toward a tip of the body and alsohaving a vertical bore 1 7 extending upwardly from its lower side andcommunicating with the channel; and a friction spring secured in thesaid vertical bore and comprising a loop having on its uppermost portiona bight that is flared toward one side of the body, and a loop having atits uppermost portion a bight that is disposed at a right angle to thefirstnamed bight and has its inner leg inclined upwardly and outwardly.

8. The combination of a shuttle body having a chamber and a longitudinalchannel extending from the chamber toward a tip of the body and alsohaving a vertical bore extending upwardly from its lower side and versebore and diagonal and longitudinal slits connecting the channel and thetransverse bore; a transverse eye arranged in said transverse bore andhaving a notch communicatingwith the channel in the body and also havinga tortuous slit extending outwardly from the notch to its delivery end;and a friction spring secured in the said vertical bore and comprising aloop having on its uppermost portion a bight that is flared toward oneside of the body, and a loop having on its uppermost portion a bightthat Copies of this patent may be obtained for five cents each, byaddressing the is disposed at a right angle to the firstnamed bight andhas its inner leg inclined upwardly and outwardly; said uppermostportions of the loops forming a mouth, for the purpose set forth,

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses. r

NAZAIRE DEMERS. Witnesses:

P. PILLEUR, J. A. BOIVIN.

" Commissioner of Patents,

Washington, D. 0."

